Figure 4
From: Hydrodynamic particle focusing enhanced by femtosecond laser deep grooving at low Reynolds numbers
Effect of open v-shaped patterns on particle focusing. (a) Schematic illustration of a microfluidic channel having three blocks of groove arrays. Schematics and superimposed experimental images depicting the distributions of polystyrene particles at the inlet, after passing block1, 2 and 3 (outlet) are shown. Scale bar is 40 µm. (b) Plots of the lateral distributions of particles along channel width. The length of one block is 1980 µm and the distance between neighboring two blocks is 220 µm. The distributions of particles at four different locations are recorded and compared: inlet (before passing block 1), after passing block 1, 2, and 3 (outlet). 200 particles are measured for each group.
